Greenwich Mean Time Zone

Time Zone of a Place
Time zone of

What is the Greenwich Mean Time Zone?

Answer

Greenwich Mean Time Zone
UTC (GMT) and UTC+1 (BST)

The same offset as a plain number: UTC.

Time Zone Facts

Abbreviations
GMT / BST
Standard time
UTC
Daylight saving time
UTC+1
Clock changes
daylight time from March 29, 2026 and standard time from October 25, 2026
Daylight saving time in effect now
Yes

Where This Zone Applies

Everywhere in this zone the clocks change twice a year.
PlaceStandard timeClock changes
United KingdomUTCYes
LondonUTCYes

Time Difference

UTC
1 hour ahead
Eastern Time
5 hours ahead
Central Time
6 hours ahead
Mountain Time
7 hours ahead
Pacific Time
8 hours ahead
Moscow Time
MSK−3 in standard time, MSK−2 in daylight time

Current time in the zone

UTC+1 — add 1 hour to UTC

Related Calculations

See Also

Time Zone of a Place

This reference shows what time zone a place is in: the name of the zone and its abbreviations, the UTC offset in standard and daylight time, whether the clocks change there and when, plus the difference from UTC, from the four US zones and from Moscow. For example, it can help you find out what is the Greenwich Mean Time Zone? (The answer is: UTC (GMT) and UTC+1 (BST)). Pick a place or a zone (e.g. 'Greenwich Mean Time') and hit the 'Find out' button.
Time Zone of a Place
Time zone of

Named Time Zones

Time zoneStandard timeDaylight saving time
Alaska TimeUTC−9UTC−8
Atlantic TimeUTC−4UTC−3
Australian Central TimeUTC+9:30UTC+10:30
Australian Eastern TimeUTC+10UTC+11
Australian Western TimeUTC+8not observed
Brasília TimeUTC−3not observed
Central European TimeUTC+1UTC+2
Central TimeUTC−6UTC−5
Chamorro TimeUTC+10not observed
East Africa TimeUTC+3not observed
Eastern European TimeUTC+2UTC+3
Eastern TimeUTC−5UTC−4
Greenwich Mean TimeUTCUTC+1
Hawaii–Aleutian TimeUTC−10not observed
Hong Kong TimeUTC+8not observed
India Standard TimeUTC+5:30not observed
Irish TimeUTCUTC+1
Irkutsk TimeUTC+8not observed
Israel TimeUTC+2UTC+3
Japan Standard TimeUTC+9not observed
Kaliningrad TimeUTC+2not observed
Kamchatka TimeUTC+12not observed
Korea Standard TimeUTC+9not observed
Krasnoyarsk TimeUTC+7not observed
Magadan TimeUTC+11not observed
Mexican Central TimeUTC−6not observed
Mexican Northwest TimeUTC−8UTC−7
Mexican Pacific TimeUTC−7not observed
Mexican Southeast TimeUTC−5not observed
Moscow TimeUTC+3not observed
Mountain TimeUTC−7UTC−6
Newfoundland TimeUTC−3:30UTC−2:30
New Zealand TimeUTC+12UTC+13
Omsk TimeUTC+6not observed
Pacific TimeUTC−8UTC−7
Samara TimeUTC+4not observed
Samoa TimeUTC−11not observed
South Africa Standard TimeUTC+2not observed
Vladivostok TimeUTC+10not observed
Western European TimeUTCUTC+1

FAQ

What is the Greenwich Mean Time Zone?

Greenwich Mean Time Zone UTC (GMT) and UTC+1 (BST)

Where does the Greenwich Mean Time Zone apply?

Among the places in this reference: the United Kingdom and London.

Do the clocks change in the Greenwich Mean Time Zone?

Yes: UTC in standard time and UTC+1 in daylight time. Everywhere in this zone the clocks change twice a year.

What does GMT stand for?

GMT is the standard time of the zone (UTC), and BST its daylight time (UTC+1).

See Also